am ef5490cf: am 97984c41: reconcile froyo-release into gingerbread

Merge commit 'ef5490cf650c65c3c5286a498b1bcdd4882ba237'

* commit 'ef5490cf650c65c3c5286a498b1bcdd4882ba237':
  FRG83
  FRG78
  FRG75
  FRG58B
  FRG58
  FRG57
  include build timestamp in OTA metadata